Optical Photoplethysmogram Signal Shape Feature Biological Monitor
First Claim
1. A system for providing a value of a biological characteristic, the system comprising:
- a sensor, wherein the sensor is configured to generate a time domain photoplethysmogram (PPG) input signal;
a first computation module coupled to the sensor, wherein the first computation module is configured to evaluate portions of the generated time domain PPG signal against predetermined quality criteria; and
a second computation module coupled to the first computation module, wherein the second computation module is configured to use portions of the generated time domain PPG signal that meet the predetermined quality criteria to generate an output value, the output value characterizing a biological characteristic at a point in time.
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Abstract
A system is described for providing the value of a biological characteristic. The system includes a sensor. The sensor is configured to generate a time domain photoplethysmogram (PPG) input signal. The system further includes a first computation module coupled to the sensor. The first computation module is configured to evaluate portions of the generated time domain PPG signal against predetermined quality criteria. The system further includes a second computation module coupled to the first computation module. The second computation module is configured to use portions of the generated time domain PPG signal that meet the predetermined quality criteria to generate an output value. The output value characterizes a biological characteristic at a point in time.
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Citations
20 Claims
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1. A system for providing a value of a biological characteristic, the system comprising:
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a sensor, wherein the sensor is configured to generate a time domain photoplethysmogram (PPG) input signal; a first computation module coupled to the sensor, wherein the first computation module is configured to evaluate portions of the generated time domain PPG signal against predetermined quality criteria; and a second computation module coupled to the first computation module, wherein the second computation module is configured to use portions of the generated time domain PPG signal that meet the predetermined quality criteria to generate an output value, the output value characterizing a biological characteristic at a point in time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of performing adaptive filtering of a time domain photoplethysmogram (PPG) signal, the method comprising:
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using a sensor, generating the time domain PPG signal; converting the time domain PPG signal to a plurality of representations of characteristics of portions of the time domain PPG signal; accessing a plurality of predetermined quality criteria; comparing the plurality of representations characteristics of portions of the time domain PPG signal to the predetermined quality criteria to identify portions of the generated time domain PPG signal that meet the predetermined quality criteria; and using portions of the generated time domain PPG signal that meet the predetermined quality criteria to generate a digital characterization of a biological characteristic at a point in time. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A system for providing a value of a biological characteristic, the system comprising:
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one or more hardware processors; one or more computer readable media coupled to the one or more processors, wherein the one or more computer readable media comprise computer executable instructions that when executed by the one or more hardware processors cause the system to perform the following; using a sensor, generating a time domain PPG signal; evaluating portions of the generated time domain PPG signal against predetermined quality criteria; and using portions of the generated time domain PPG signal that meet the predetermined quality criteria to generate an output value, the output value characterizing a biological characteristic at a point in time.
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Specification